The middle ages was a deeply religious time, and since the bulk of heraldry was developed in countries that were almost entirely Christian it is no surprise that religious and church symbology was widely adopted for use in coats of arms. The angel Is a typical such usage. Wade assigns it the additional meaning of “dignity, glory and honour”. The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P104 They are depicted in conventional form, facing the viewer with wings extended. A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:ANgel